This is straight from Russian: "Blatt" is slang for a hooker. It is also a very insulting curse word, regardless of it's meaning, and a word that is used to express frustration or anger (much
like "
Fuck" in
English). Since it's use is so common by some who speak Russian, it became very popular and common in Hebrew slang as well, for the same reasons described under Gandon.
"Blatt! I can't
open this box..."
"Blatt! He won't answer the
phone!"
"And then Blatt I went to the
store Blatt and told the clerk Blatt give me Blatt the goddamn chewing gum Blatt!!"
(extreme example)